Anyone seen this before?

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10/9/2020 12:42 PM

I have a 2021 KTM 250sxf with one ride on it. After the first day I rode the bike I came home and washed it. Well the day after, I come into my garage to see this. The forks are absolutely filthy and I know that I did a thorough job cleaning the bike, so I just grabbed some soap and water to try and clean it off. After sitting there trying to clean it nothing ever happened. No matter how hard I try to clean the forks they are still filthy. Has anyone ever seen this? Could the anodizing be messed up? Anyone know how to fix or clean this? I also have a 2019 KTM 250sx with 200 hours on it and haven’t had this problem on that bike. Photo

Photo

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10/9/2020 12:46 PM

If i'm not mistaken there were some threads like this refering to lime soil being the culprit.

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- Filthy Euro
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10/9/2020 12:48 PM

What did you clean it with? looks like something harsh that dried and etched the anodizing.

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The older I get, the faster I was.

10/9/2020 12:49 PM
Edited Date/Time: 10/9/2020 12:50 PM

corrosion

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10/9/2020 12:54 PM

Yeah looks like it could be etching. Did you use any different cleaner than you have used on your 250sx? Rode anywhere different that the 250sx hasn't been?

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10/9/2020 12:56 PM

captmoto wrote:

What did you clean it with? looks like something harsh that dried and etched the anodizing.

Everytime I clean either of my bikes it’s with simple green or just plain old dawn dish soap

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10/9/2020 12:57 PM

JohnMatrix wrote:

Yeah looks like it could be etching. Did you use any different cleaner than you have used on your 250sx? Rode anywhere different that the 250sx hasn't been?

I’ve used the same cleaner as my other bike, and yea for the first time I rode this bike it was just at my local track which is where I always ride my other bike too.

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10/9/2020 1:34 PM

Could it have been like that when you bought the bike?

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10/9/2020 1:50 PM

If not the cleaner, the soil.

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10/9/2020 2:02 PM

hard water buildup?

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10/9/2020 2:06 PM

Can you test the anodizing hardness in an obscure spot with a pick and see if there's a difference between the 2?

If it's the same cleaner, same water, same track something else changed.

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2015 Beta 500 RS, history: 99 KTM 300, 87 CR250, 84 KLR 600, 82 GPZ 550, 81 KX 250, 80 KX 250, 79 Montesa 414 VE, 78 250 VB, 77 360 VB, 76 360 VA, 75 YZ 125, 74 TM 125, 72 TS 125, 60's West Bend Go Boy Kart

10/9/2020 2:20 PM

Did you at least dry the bike or spray it with a protectant before putting it away?

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10/9/2020 2:38 PM

Simple green does that

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10/9/2020 3:13 PM
Edited Date/Time: 10/9/2020 3:13 PM

yz133rider wrote:

Simple green does that

Yes it does, but not after 1 ride.

Was it a mud race, and did the promoter drop a ton of white powder looking stuff on the puddled start?

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10/9/2020 3:19 PM

Johnny Depp wrote:

Can you test the anodizing hardness in an obscure spot with a pick and see if there's a difference between the 2?

If it's the same cleaner, same water, same track something else changed.

Yea thanks I’ll look it up to see if I can figure out a way to test the metal. I’m not sure if between maybe 2019 and 2021 they changed the fork material so maybe on the 2021’s the anodizing is weaker?

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10/9/2020 3:20 PM

yz133rider wrote:

Simple green does that

But I’ve used simple green on my other bike for countless amount of washes and have never had this problem. Ride and wash this bike once and now the forks are stained

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10/9/2020 3:21 PM

tobz wrote:

Did you at least dry the bike or spray it with a protectant before putting it away?

Yes the bike was gone through and dried after I washed it

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10/9/2020 3:23 PM

yz133rider wrote:

Simple green does that

GrapeApe wrote:

Yes it does, but not after 1 ride.

Was it a mud race, and did the promoter drop a ton of white powder looking stuff on the puddled start?

Actually it was pretty dry out at the track. As far as the soil goes I didn’t see anything being laid down but who knows if they mixed anything in the soil during the week

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10/9/2020 3:26 PM

Simple green is too harsh for bikes. If I had to guess the OP wanted to clean his new bike really well, put it on too heavy, and it etched.

If you disagree test it on some black anodized part and you will see exactly this.

You can use Never Dull or some other very light metal polish to try and clean it up.

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10/9/2020 3:36 PM

Simple Green does wonders, but also is more damaging to certain surfaces than the label would lead you to think. Go wash your truck, and use Simple Green to clean the frame. Your semi-gloss frame will now be flat black in the spots you have used Simple Green.

On a positive note, Simple Green is great for tires, not that many of us clean tires at that level, but it will not harm rubber, it helps maintain or increase the softness of the compound.

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